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#pragma once

namespace Falcor
{
    /** Flags to indicate what have changed since last frame.
        One or more flags can be OR'ed together.
    */
    enum class RenderPassRefreshFlags : uint32_t
    {
        None                    = 0x0,
        LightingChanged         = 0x1,      ///< Lighting has changed.
        RenderOptionsChanged    = 0x2,      ///< Options that affect the rendering have changed.
    };

    /** The refresh flags above are passed to RenderPass::execute() via a
        field with this name in the dictionary.
    */
    static const char kRenderPassRefreshFlags[] = "_refreshFlags";

    /** First available preudorandom number generator dimension.
    */
    static const char kRenderPassPRNGDimension[] = "_prngDimension";

    /** Adjust shading normals on primary hits.
    */
    static const char kRenderPassGBufferAdjustShadingNormals[] = "_gbufferAdjustShadingNormals";

    FALCOR_ENUM_CLASS_OPERATORS(RenderPassRefreshFlags);
}
